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Updated: Mar 2, 2026

Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
Published on: September 18, 2020
Cancer epigenetics: modifications, screening, and therapy
Einav Nili Gal-Yam1, Yoshimasa Saito, Gerda Egger
1Department of Urology, Biochemistry and Molecular Biology, USC/Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles 90089, USA.
Abstract:
Deregulation of gene expression is a hallmark of cancer. Although genetic lesions have been the focus of cancer research for many years, it has become increasingly recognized that aberrant epigenetic modifications also play major roles in the tumorigenic process. These modifications are imposed on chromatin, do not change the nucleotide sequence of DNA, and are manifested by specific patterns of gene expression that are heritable through many cell divisions. We review these modifications in normal and cancer cells and the evolving approaches used to study them. Additionally, we outline advances in their potential use for cancer diagnostics and targeted epigenetic therapy.
Insights
Aberrant epigenetic modifications, which alter gene expression without changing DNA sequence, are key drivers of cancer. Research is advancing their use in cancer diagnostics and targeted epigenetic therapies.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- Gene expression deregulation is a hallmark of cancer.
- Epigenetic modifications, heritable changes in gene expression without altering DNA sequence, play crucial roles in tumorigenesis.
- These modifications occur on chromatin and influence cellular function.
Purpose of the Study:
- To review epigenetic modifications in normal and cancer cells.
- To discuss evolving methodologies for studying these epigenetic changes.
- To outline advances in the diagnostic and therapeutic applications of epigenetics in cancer.
Main Methods:
- Review of current scientific literature on epigenetic modifications.
- Analysis of emerging techniques for epigenetic analysis.
- Synthesis of data on epigenetic biomarkers and therapeutic strategies.
Main Results:
- Epigenetic alterations are integral to cancer development and progression.
- Various methods are being developed to detect and analyze epigenetic changes.
- Significant progress has been made in leveraging epigenetic modifications for cancer diagnosis and treatment.
Conclusions:
- Epigenetic modifications are critical in cancer biology.
- Advanced study approaches are enhancing our understanding of cancer epigenetics.
- Epigenetic strategies hold promise for future cancer diagnostics and targeted therapies.
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